Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii

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Second chromosome inversion and genotypic frequencies at seven allozyme loci, differentially associated with inversions, were determined in seven natural populations of Drosophila buzzatii. The patterns of variation of allozymes and the inversion polymorphisms were significantly different, indicatin...

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Autores principales: Rodriguez, C., Piccinali, R., Levy, E., Hasson, E.
Formato: JOUR
Materias:
Allozymes
Drosophila buzzatii
Inversion polymorphism
Population structure
allozyme
genetic structure
polymorphism
population genetics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_1010061X_v13_n6_p976_Rodriguez
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_1010061X_v13_n6_p976_Rodriguez2023-10-03T15:55:50Z Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii Rodriguez, C. Piccinali, R. Levy, E. Hasson, E. Allozymes Drosophila buzzatii Inversion polymorphism Population structure allozyme genetic structure polymorphism population genetics Second chromosome inversion and genotypic frequencies at seven allozyme loci, differentially associated with inversions, were determined in seven natural populations of Drosophila buzzatii. The patterns of variation of allozymes and the inversion polymorphisms were significantly different, indicating the role of adaptive differentiation for the latter. Moreover, the patterns of population structure varied among allozyme loci, suggesting the operation of diversifying selection for certain loci. Differentiation was negligible for Leucyl-amino peptidase (Lap) and Peptidase-2 (Pep-2), low to moderate for Aldehyde oxidase (Aldox), Peptidase-1 (Pep-1) and Esterase-1 (Est-1) and high for Esterase-2 (Est-2) and Xanthine dehydrogenase (Xdh). Significant linkage disequilibria were detected between inversions and Aldox, Est-1, Est-2 and Xdh. Multiple regression analyses of inversion and allele frequencies on environmental variables revealed the existence of clines for inversions, Est-1, Est-2, Xdh and Aldox along altitudinal, latitudinal and/or climatic gradients. Tests using conditional allele frequencies showed that Est-1 and Aldox clines could be accounted for by hitchhiking with inversions, whereas natural selection should be invoked to explain the clines observed for Est-2 and Xdh. Fil:Rodriguez, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Piccinali, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Levy, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hasson, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_1010061X_v13_n6_p976_Rodriguez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Allozymes
Drosophila buzzatii
Inversion polymorphism
Population structure
allozyme
genetic structure
polymorphism
population genetics
spellingShingle Allozymes
Drosophila buzzatii
Inversion polymorphism
Population structure
allozyme
genetic structure
polymorphism
population genetics
Rodriguez, C.
Piccinali, R.
Levy, E.
Hasson, E.
Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
topic_facet Allozymes
Drosophila buzzatii
Inversion polymorphism
Population structure
allozyme
genetic structure
polymorphism
population genetics
description Second chromosome inversion and genotypic frequencies at seven allozyme loci, differentially associated with inversions, were determined in seven natural populations of Drosophila buzzatii. The patterns of variation of allozymes and the inversion polymorphisms were significantly different, indicating the role of adaptive differentiation for the latter. Moreover, the patterns of population structure varied among allozyme loci, suggesting the operation of diversifying selection for certain loci. Differentiation was negligible for Leucyl-amino peptidase (Lap) and Peptidase-2 (Pep-2), low to moderate for Aldehyde oxidase (Aldox), Peptidase-1 (Pep-1) and Esterase-1 (Est-1) and high for Esterase-2 (Est-2) and Xanthine dehydrogenase (Xdh). Significant linkage disequilibria were detected between inversions and Aldox, Est-1, Est-2 and Xdh. Multiple regression analyses of inversion and allele frequencies on environmental variables revealed the existence of clines for inversions, Est-1, Est-2, Xdh and Aldox along altitudinal, latitudinal and/or climatic gradients. Tests using conditional allele frequencies showed that Est-1 and Aldox clines could be accounted for by hitchhiking with inversions, whereas natural selection should be invoked to explain the clines observed for Est-2 and Xdh.
format JOUR
author Rodriguez, C.
Piccinali, R.
Levy, E.
Hasson, E.
author_facet Rodriguez, C.
Piccinali, R.
Levy, E.
Hasson, E.
author_sort Rodriguez, C.
title Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
title_short Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
title_full Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
title_fullStr Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
title_full_unstemmed Contrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
title_sort contrasting population genetic structures using allozymes and the inversion polymorphism in drosophila buzzatii
url http://hdl.handle.net/20.500.12110/paper_1010061X_v13_n6_p976_Rodriguez
work_keys_str_mv AT rodriguezc contrastingpopulationgeneticstructuresusingallozymesandtheinversionpolymorphismindrosophilabuzzatii
AT piccinalir contrastingpopulationgeneticstructuresusingallozymesandtheinversionpolymorphismindrosophilabuzzatii
AT levye contrastingpopulationgeneticstructuresusingallozymesandtheinversionpolymorphismindrosophilabuzzatii
AT hassone contrastingpopulationgeneticstructuresusingallozymesandtheinversionpolymorphismindrosophilabuzzatii
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